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authorDavid VomLehn <dvomlehn@cisco.com>2010-08-02 18:40:58 -0700
committerRalf Baechle <ralf@linux-mips.org>2010-08-05 13:26:34 +0100
commit0d365753d0b7c26043fdfa97790411606fb40112 (patch)
tree8ad3a06bf6c5299151a611d55c7e5b2a5d63fec6 /arch/mips/powertv/asic/asic_devices.c
parent5089ca9d31b0250f42ccd0e0a41b3547f22a20a0 (diff)
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MIPS: PowerTV: Separate PowerTV USB support from non-USB code
Separate USB code into a file separate from asic/asic_devices. Separating the USB code from everything else in asic/asic_devices.c goes a long way toward reducing the use of that file as a dumping ground for everything that didn't seem to fit anywhere else. Signed-off-by: David VomLehn <dvomlehn@cisco.com> To: linux-mips@linux-mips.org Cc: greg@kroah.com Cc: linux-usb@vger.kernel.org Patchwork: http://patchwork.linux-mips.org/patch/1522/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/powertv/asic/asic_devices.c')
-rw-r--r--arch/mips/powertv/asic/asic_devices.c238
1 files changed, 13 insertions, 225 deletions
diff --git a/arch/mips/powertv/asic/asic_devices.c b/arch/mips/powertv/asic/asic_devices.c
index 095a887df39..e56fa61b399 100644
--- a/arch/mips/powertv/asic/asic_devices.c
+++ b/arch/mips/powertv/asic/asic_devices.c
@@ -33,7 +33,6 @@
#include <linux/mm.h>
#include <linux/platform_device.h>
#include <linux/module.h>
-#include <linux/gfp.h>
#include <asm/page.h>
#include <linux/swap.h>
#include <linux/highmem.h>
@@ -68,7 +67,6 @@ unsigned long asic_phy_base;
unsigned long asic_base;
EXPORT_SYMBOL(asic_base); /* Exported for testing */
struct resource *gp_resources;
-static bool usb_configured;
/*
* Don't recommend to use it directly, it is usually used by kernel internally.
@@ -91,101 +89,19 @@ struct resource asic_resource = {
};
/*
- *
- * USB Host Resource Definition
- *
- */
-
-static struct resource ehci_resources[] = {
- {
- .parent = &asic_resource,
- .start = 0,
- .end = 0xff,
- .flags = IORESOURCE_MEM,
- },
- {
- .start = irq_usbehci,
- .end = irq_usbehci,
- .flags = IORESOURCE_IRQ,
- },
-};
-
-static u64 ehci_dmamask = DMA_BIT_MASK(32);
-
-static struct platform_device ehci_device = {
- .name = "powertv-ehci",
- .id = 0,
- .num_resources = 2,
- .resource = ehci_resources,
- .dev = {
- .dma_mask = &ehci_dmamask,
- .coherent_dma_mask = DMA_BIT_MASK(32),
- },
-};
-
-static struct resource ohci_resources[] = {
- {
- .parent = &asic_resource,
- .start = 0,
- .end = 0xff,
- .flags = IORESOURCE_MEM,
- },
- {
- .start = irq_usbohci,
- .end = irq_usbohci,
- .flags = IORESOURCE_IRQ,
- },
-};
-
-static u64 ohci_dmamask = DMA_BIT_MASK(32);
-
-static struct platform_device ohci_device = {
- .name = "powertv-ohci",
- .id = 0,
- .num_resources = 2,
- .resource = ohci_resources,
- .dev = {
- .dma_mask = &ohci_dmamask,
- .coherent_dma_mask = DMA_BIT_MASK(32),
- },
-};
-
-static struct platform_device *platform_devices[] = {
- &ehci_device,
- &ohci_device,
-};
-
-/*
- *
- * Platform Configuration and Device Initialization
- *
- */
-static void __init fs_update(int pe, int md, int sdiv, int disable_div_by_3)
-{
- int en_prg, byp, pwr, nsb, val;
- int sout;
-
- sout = 1;
- en_prg = 1;
- byp = 0;
- nsb = 1;
- pwr = 1;
-
- val = ((sdiv << 29) | (md << 24) | (pe<<8) | (sout<<3) | (byp<<2) |
- (nsb<<1) | (disable_div_by_3<<5));
-
- asic_write(val, fs432x4b4_usb_ctl);
- asic_write(val | (en_prg<<4), fs432x4b4_usb_ctl);
- asic_write(val | (en_prg<<4) | pwr, fs432x4b4_usb_ctl);
-}
-
-/*
* Allow override of bootloader-specified model
+ * Returns zero on success, a negative errno value on failure. This parameter
+ * allows overriding of the bootloader-specified model.
*/
static char __initdata cmdline[COMMAND_LINE_SIZE];
#define FORCEFAMILY_PARAM "forcefamily"
+/*
+ * check_forcefamily - check for, and parse, forcefamily command line parameter
+ * @forced_family: Pointer to two-character array in which to store the
+ * value of the forcedfamily parameter, if any.
+ */
static __init int check_forcefamily(unsigned char forced_family[2])
{
const char *p;
@@ -225,14 +141,10 @@ static __init int check_forcefamily(unsigned char forced_family[2])
*/
static __init noinline void platform_set_family(void)
{
-#define BOOTLDRFAMILY(byte1, byte0) (((byte1) << 8) | (byte0))
-
unsigned char forced_family[2];
unsigned short bootldr_family;
- check_forcefamily(forced_family);
-
- if (forced_family[0] != '\0' && forced_family[1] != '\0')
+ if (check_forcefamily(forced_family) == 0)
bootldr_family = BOOTLDRFAMILY(forced_family[0],
forced_family[1]);
else {
@@ -298,24 +210,9 @@ unsigned int platform_get_family(void)
EXPORT_SYMBOL(platform_get_family);
/*
- * \brief usb_eye_configure() for optimizing the USB eye on Calliope.
- *
- * \param unsigned int value saved to the register.
- *
- * \return none
- *
- */
-static void __init usb_eye_configure(unsigned int value)
-{
- asic_write(asic_read(crt_spare) | value, crt_spare);
-}
-
-/*
* platform_get_asic - determine the ASIC type.
*
- * \param none
- *
- * \return ASIC type; ASIC_UNKNOWN if none
+ * Returns the ASIC type, or ASIC_UNKNOWN if unknown
*
*/
enum asic_type platform_get_asic(void)
@@ -325,93 +222,10 @@ enum asic_type platform_get_asic(void)
EXPORT_SYMBOL(platform_get_asic);
/*
- * platform_configure_usb - usb configuration based on platform type.
- * @bcm1_usb2_ctl: value for the BCM1_USB2_CTL register, which is
- * quirky
- */
-static void __init platform_configure_usb(void)
-{
- u32 bcm1_usb2_ctl;
-
- if (usb_configured)
- return;
-
- switch (asic) {
- case ASIC_ZEUS:
- case ASIC_CRONUS:
- case ASIC_CRONUSLITE:
- fs_update(0x0000, 0x11, 0x02, 0);
- bcm1_usb2_ctl = 0x803;
- break;
-
- case ASIC_CALLIOPE:
- fs_update(0x0000, 0x11, 0x02, 1);
-
- switch (platform_family) {
- case FAMILY_1500VZE:
- break;
-
- case FAMILY_1500VZF:
- usb_eye_configure(0x003c0000);
- break;
-
- default:
- usb_eye_configure(0x00300000);
- break;
- }
-
- bcm1_usb2_ctl = 0x803;
- break;
-
- default:
- pr_err("Unknown ASIC type: %d\n", asic);
- break;
- }
-
- /* turn on USB power */
- asic_write(0, usb2_strap);
- /* Enable all OHCI interrupts */
- asic_write(bcm1_usb2_ctl, usb2_control);
- /* USB2_STBUS_OBC store32/load32 */
- asic_write(3, usb2_stbus_obc);
- /* USB2_STBUS_MESS_SIZE 2 packets */
- asic_write(1, usb2_stbus_mess_size);
- /* USB2_STBUS_CHUNK_SIZE 2 packets */
- asic_write(1, usb2_stbus_chunk_size);
-
- usb_configured = true;
-}
-
-/*
- * Set up the USB EHCI interface
- */
-void platform_configure_usb_ehci()
-{
- platform_configure_usb();
-}
-
-/*
- * Set up the USB OHCI interface
- */
-void platform_configure_usb_ohci()
-{
- platform_configure_usb();
-}
-
-/*
- * Shut the USB EHCI interface down--currently a NOP
+ * set_register_map - set ASIC register configuration
+ * @phys_base: Physical address of the base of the ASIC registers
+ * @map: Description of key ASIC registers
*/
-void platform_unconfigure_usb_ehci()
-{
-}
-
-/*
- * Shut the USB OHCI interface down--currently a NOP
- */
-void platform_unconfigure_usb_ohci()
-{
-}
-
static void __init set_register_map(unsigned long phys_base,
const struct register_map *map)
{
@@ -560,34 +374,8 @@ void __init configure_platform(void)
}
}
-/**
- * platform_devices_init - sets up USB device resourse.
- */
-static int __init platform_devices_init(void)
-{
- pr_notice("%s: ----- Initializing USB resources -----\n", __func__);
-
- asic_resource.start = asic_phy_base;
- asic_resource.end += asic_resource.start;
-
- ehci_resources[0].start = asic_reg_phys_addr(ehci_hcapbase);
- ehci_resources[0].end += ehci_resources[0].start;
-
- ohci_resources[0].start = asic_reg_phys_addr(ohci_hc_revision);
- ohci_resources[0].end += ohci_resources[0].start;
-
- set_io_port_base(0);
-
- platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
-
- return 0;
-}
-
-arch_initcall(platform_devices_init);
-
/*
- *
- * BOOTMEM ALLOCATION
+ * RESOURCE ALLOCATION
*
*/
/*